Advanced Race Car Chassis Technology HP1562: Winning Chassis Design and Setup for Circle Track and Road Race Cars

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Penguin, Nov 2, 2010 - Transportation - 160 pages
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Updated with nearly 60 percent new material on the latest racing technology, this book details how to design, build, and setup the chassis and suspension for road race and stock cars. Includes chassis dynamics, spring and shock theory, front and rear suspension geometry, real world racing aerodynamics, steering systems, racing chassis software and all you need to know to set you chassis up to win races.

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The Panhard BarJbar Mount
Methods to Increase Bite
Tire Temperatures
Get the Core Temperature
Determining Handling Balance
Tire Pressures
Pressures for Qualifying
Tire Stagger

Rear CoilOver Springs
Front Roll Moment Center Design
Know Your Roll Center
Track the Location of Your Moment Center
Freedom of Movement
The Panhard Bar
Track Bar Split
Short Rear Trailing Arms
Angle Affects Rear Steer
Rear Leaf Springs
Avoid Rear Sway Bars
Moving Weight Around
FrontEnd Geometry Settings
Adjustable Length Spindles
Defining the Front Moment Center
Locating the Front Moment Center
Upper Arm Angles
Using a Computer Program to Locate Moment Center
How the Moment Center Affects Chassis Setup
Two Forces Acting on the Chassis
Moment Arm Changes Length as Moment Center Moves
The Wrong Front Moment Center Location
Moment Center Movement
Dirt Car Moment Center Location
Asphalt Car Moment Center Location
The Best Moment Center Location
Sample Locations
Adjust Range for Center of Gravity
Camber Should Stay the Same
How to Measure the Front Moment Center
Chassis RDs Computer Program
Calculating Roll Angles and Understanding Their Effect
True Load Transfer
Shocks and Load Transfer
The Way the Chassis Really Works
The Best Load Distribution Design
Balanced Load Distribution
About Load Transfer
Difference between High and Low Banking
Putting Everything Together for a Balanced Setup
How Spring Combination Affects Chassis Setup
Springs Are Used to Balance the Setup
Proper Spring Selection
Choose Spring Rates to Balance the Roll Angles
How to Rate and Check Your Springs
Why Spring Rates Change
Use Straight Springs
How to Change Springs Correctly
How It Can Go Wrong
Wheel Rate
Spring Bind and How to Avoid It
CoilOver Spring Bind
Incorrect Spring Seats
Spring Rubbers
Changes in Flight
The RackandPinion System Ackermann
The Drag Link Steering System
Rack Spindles on Drag Link Cars
Check Steer Toe to Make Sure
Correcting Ackermann with Steering Arm Lengths
Swapping Spindles
Use Custom Spindles
Camber Change
True Camber Change Defined
Camber Changes as Chassis Rolls
Camber Change as the Car Dives
Arm Lengths and Camber Change
Small Upper Control Arm Angles
Camber Change from Steering Input
Camber Change Related to Spindle Heights
Drawing Some Simple Conclusions
Caster and Caster Stagger
Shimming to Adjust Caster
Bump Steer
How to Achieve Zero Bump Steer
Changes That Ruin Bump Steer
Making Changes to Bump Steer
A Good Compromise
Which Cars Use AntiDive?
AntiDive Drawback
Checking Rear End for Square
Asphalt Rear Steer
Rear Steer to the Left
Front Stagger Split
Rear Stagger Split
Run the Correct Stagger
CrossWeight vs Stagger
The Modern Racing Shock
Shocks Are Speed Controllers
Rebuildable Shocks
What Shocks on What End?
Gas Shocks
SplitValve Shocks
Tuning with Shocks
Basic Shock Theory
Shock Resistance Affected by Spring Rate
Use SplitValve Shocks for Entry and Exit
Weight Jacking Using Shocks
Using Shocks for More Bite
Brand Differences
Test Your Shocks Often
Do Your Setup Before Selecting Shocks
Corner Exit Control
Aerodynamic Control Using Shocks
Aero Push
Shock Travel
Selecting Components for Bias
Master Cylinders
Brake Calipers
Brake Bias
Brakes Can Change Amount of Grip
Brake Failure
Brake Pads
Basic Aerodynamic Principles
Short Track Aerodynamics
How Aero Forces Work
Rear Downforce
Front Downforce
Superspeedway Aerodynamics
Low Front Spoiler
Pitch Control Enhances Aero Efficiency
Aero Push
Setup Creates Aero Problems
Wind Tunnel Testing
Gear Selection
Power vs Wheel Spin
Pinion Angle Controls Rear Wheel Horsepower
Power Loss Due to Universal Joint Angle
How to Measure Pinion Angle
Running Past the Powerband
Rear Differential Selection
The Locked Rear End Spool
The Detroit Locker
TractionSensing Differentials
How Dirt Cars Are Different
Track Surface Changes
Large Choice of Tire Hardness and Tread Design
Horsepower to Grip Ratio
Making the Car Turn
Front Moment Center Location
Weight Distribution
Birdcage Indexing
The SwingArm Trailing Arm
Practice Sessions
Driver Input During Practice
Common Driver Complaints
Evaluate Quickly
Make Responsible Changes
Lap Times Are Important
Consider Tires vs Lap Times
Track Testing
Making Setup Changes
Establish the Correct Setup in the Shop
Maintain Ride Heights
Maintain Good Notes on Practice and Races
Soft Walls
The Soft Car Solution
The Evolution of the Stock Car Chassis
The Balanced Setup
The Old Days Were Better
Top Engineers Couldnt Help
Considering the Effect of Changes
Crush Zones
Use Foam Material to Cushion Impact
Governing Bodies Need to Act

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About the author (2010)

BOB BOLLES is the owner of Chassis R&D, a stock car racing consulting and software development company.

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